I found these in googling for a solution. Please be cautious in implementing any of them. Because you own the product you can get into their support board. You might want to try that first. My guess is that they have a "fix tool" precisely for this problem since you were probably not the first to experience it.
Two possible solutions: 1)replace "Automatic" by "Permit All" in Personal Firewall/Programs for all programs with Automatic status
and 2) (which maybe chancy) Edit of registry to change the following values:
1.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDlls
The Registry Key 'C:\Program Files\Common Files\Symantec Shared\ccProxy.exe' required a value change to '4'
2. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ccProxy
The Registry Key 'Start' required a value change to '4' NB. In order to accomplish this 2nd change it was neccesary to uncheck the 'Turn on Protection for my Symantec Product' (NIS Security Centre, Options Drop Down, General) and recheck it after changing the value.
And to restore what appears to be the loss of email files, got this from Symmantec: (for an earlier version of Symmantec's email problem)
To repair the problem manually
1. Start Windows Explorer.
2. Locate and delete the Extend.dat file.
The default location of Extend.dat depends on your version of Windows:
* In Windows XP/2000, the location is %Userprofile%\Local Settings\Application Data\Microsoft\Outlook.
* In Windows NT 4.0, the location is %Userprofile%\Application Data\Microsoft\Outlook.
* In Windows 98, the location is C:\Windows\Local Settings\Application Data\Microsoft\Outlook.
The Extend.dat file is created again the next time that you open Outlook, and the Microsoft Exchange plug-in is installed the first time that an email message is opened.
3. Start the Registry Editor.
4. Browse to the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Client\Extensions\
In the following steps, it is important to leave the most recent value remaining. Delete only the older value or values from previous installations.
5. In the right pane, you may see two or more values listed that are related to Norton AntiVirus or Symantec AntiVirus. Delete the older LDVP and SavCorp values. Do not delete the newest Symantec value or any other values, except the LDVP and older SavCorp values.
For example, if you see all four of the values that appear in the following table and you are using Symantec AntiVirus Corporate Edition 10.0, then delete LDVP, delete SavCorp801, delete SAVCORP90, and leave Symantec AntiVirus alone.
The following table describes the complete list of possible values and the product versions to which they correspond:
Value Product version
LDVP Norton AntiVirus Corporate Edition 7.x and early versions of Symantec AntiVirus Corporate Edition 8.0
SavCorp801 Symantec AntiVirus Corporate Edition 8.0
SAVCORP90 Symantec AntiVirus Corporate Edition 9.0
Symantec AntiVirus Symantec AntiVirus Corporate Edition 10.0
6. Exit the Registry Editor.